sands



E. M. BAKER.

SASH BALANCE.

(No Model.)

,389. Patented May 6, 1890.

H/. A TTOHIVEYS l fg@ UNITED STATES yArtNr FFICE.

FRANCIS M. BAKER, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO` OFSAME PLACE.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 427,389, dated May 6,1890.

Application filed February 20, 1890. Serial No. 341,159, (No model.)

To all whom it may concern.-

Be it known that I, FRANCIS M. BAKER, of St. Louis, in the State ofMissouri, have invented certain new and useful Improvements 5 inSash-BalancingDevices, of which thefollowing is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention relates to that class of devices Io in which thewindow-sashes are balanced by weighted racks and pinions; and itconsists in the novel construction, combination, and arrangement ofparts hereinafter set forth, and particularly pointed out in the claims.

In the drawings, Figure 1 is a perspective view of a sash and improvedweight. Fig. 2 is a sectional elevation of the sash and weight, theweight being located in its removable shell or box. Fig. 3 is a sideelevation 2o of a weight detached. Fig. 4 is a face view of same. Fig. 5is a perspective view showing the front of one of the removable weightshells or boxes. Fig. G is a like view showing the back of same; andFig. '7 is a scctional plan view showing the Weight-box located in theordinary window-frame, the section through the said box being taken online c, Fig. 5.

l represents the ordinary sashes, having 3o the racks 2 set in grooves 3in the edges of said sashes, by means of which the retainingstrips, suchas 4, which are provided in all ordinary windows, may be used full size,as it is obvious that said racks 2 are thereby set entirely within thesash and do not project to interfere with the strips 4, which areapplied to the window-frame in the ordinary manner. (See Fig. 7.)

6 is the weight, any number of which may 4o be used, and which has rack7 cast integral with its front side, and a roller S, journaled betweeninwardly-projecting lugs a, also cast upon its lower end, so as to beprojected inwardly a sufficient distance to havel a bearing against theinner surface of the stileboard b, and so prevent tipping of the weightduring upward movement of same, which I have found by experiment wouldoccur were said roller not so provided. '9 is an upper roller located atthe upper end of said weight 5o and jourualed between ears c, which arecastupon the weight so as to project inwardly a sufficient distance tobear against the stileboard b, and thereby guide the upper end of andconsequent pressure against the pinion 17, said upper roller beinglocated at one side of the weight-rack 7, so 4as not to interfere withthe. length of same. The Weights are cast in the form of a hollowshell,with apas- 6o sage-Way 10 extending through their bodies,beginning at their upper ends, whereby slugs or small pieces of weightymaterial-such as lead or iron-may be inserted, for the purpose ofaltering the gravitation of the weights Without altering their externalcontour, as will be readily understood.

d indicates the slugs of lead or other material located in the hollowWeights. To prevent backward tipping of theweights, I may like- 7o wiseapply rollers 11 (indicated by dotted lines in Fig. 3) to the back ofthem, at either top and bottom or at top only.

l2 indicates the removable and adjustable box in which the Weights andpinions are located. It preferably consists of a rectangular box havingone end and side open, the same being the side next adjacent to thesash, and having three vertical plates 13, which'are provided at theproper height with holes or 8o bearings 15 for the spindle 16,Whichextends across the box and carries pinions 17 thereon in position tomesh with the racks on the weights. It will thus be seen that slidewaysare formed in said removable boxes,in which the weights move up and downand are guided in a perfectly-vertical line Without imposing unduepressure or friction on the pinions.

Atthe back of each box and in the closed rear side of each slideway fhorizontal open- 9o ings 19 are cut, and rollers 18 are properly journaled therein, against which the Weights slide during operation.Instead, however, of making use of these last-named rollers I maydiscard them and bring into use the construction shown in Fig. 3 indotted lines, in which are shown rollers j ournaled upon the back of theweight, the construction in either case perthe weight and prevent itsinward tipping 5 5 I forming the same function-viz., guiding the back ofthe Weights and obviat-ing any tendency to backward tipping of same,whichlhas heretofore occurred in mechanisms of this character, causingthe same to run very hard.

The operation is as follows: Should it be desirable to apply myimprovement to a window already constructed, and, say, provided alreadywith weights and cords of ordinary form, I first remove a portion of theinner casing (or it may be all) h, which will permit of sliding the boxl2 directly into place, when all that will further be necessary will beto out grooves in the sashes and apply the sash-racks thereto, all asbefore set forth.

By such construction the invention may readily be applied to windows ofordinary construction without a great amount of alteration being done tothem, the removable box being complete Within itself, carrying theWeights for both upper and lower sashes, with their pinions and rollersnecessary to insure successful operation for a comparatively unlimitedlength of time.

The improved Weights, being hollow, can be made heavier or lighter tosuit different weights of sash, in the manner before described.

The rem ovable box can be made either of cast metal, which I prefer, orit may be built upy of Wood.

I make no claim to-the devices shown in United States Patents Nos. 7,003and 321,035; but

IVhat I claim isl. A balancing-weight having a toothed rack 7 castintegral with its front face and a roller or rollers journaled toproject from said front face, substantially as herein set forth.

2. A balancing-weight having a toothed rack 7 and lugs a cast integralwith the body thereof, so as to project inwardly from said body, androller-carrying lugs projecting from the back in a plane with saidinwardly-proj ecting lugs, for the purpose substantially as set forth.

3. As an improved article of manufacture` a hollow sash-weight havingrack-teeth cast integral with its inner face, the said inner face alsohaving lugs or projections in which are secured rollers, substantiallyas described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANCIS M. BAKER. "Witnesses:

E. E. HIGDoN, JNO. C. HIGDoN.

